Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 139, Issue 2-3, Pages 494-499Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2013.01.047
Keywords
Electrical properties; Infrared spectroscopy (IR); Raman spectroscopy and scattering; Powder diffraction
Categories
Funding
- CAPES
- Funcap
- FAPEMA
- CNPq
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A new synthetic route was used to obtain bismuth rare earth tungstates: BiREWO6, where RE = Y, Gd and Nd. These materials were obtained by microwave radiation in air at 900-1100 degrees C for 10 min, depend on the rare earth composition in the ceramic. Structural characterization was performed by X-ray powder diffraction, Infrared and Raman spectroscopy. It was observed that all samples are isostructural materials with monoclinic phase with space group A12/m1 and member of the Aurivillius family, as Bi2WO6 ferroelectric phase. It was observed moderated values for dielectric measurements (14 < epsilon(r)' > 19 and 0.018 < tg delta > 0.079) at microwaves frequencies, which can be used as Dielectric Resonator Antenna or for size reduction of the electric device. (C) 2013 Elsevier B.V. All rights reserved.
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